September is Deaf Awareness Month!
September 14: Captioning Becomes Law
Major federal laws mandating closed captioning in the United States include the
Television Decoder Circuitry Act of 1990, the Telecommunications Act of 1996, and the 21st Century Communications and Video Accessibility Act of 2010.
These laws built upon decades of advocacy and technological development, transforming captioning from a specialized service into a widely accessible, legally required feature.
Captioning history on Wikipedia: wikipedia.org/wiki/Closed_captioning